生活型

herb

形態特徵

• Terrestrial. Stems nearly erect, 35-50 cm long.
• Leaves alternate, nearly perpendicular to stem, lanceolate-oblong, 5 cm long, 1.3 cm wide, apex acuminate, obliquely 2-lobed, base contracted, twisted; sheaths tubular.
• Raceme to 1.5 cm long, with ca. 10 flowers; bracts ovate, 4 mm long; pedicel and ovary 5 mm long. Flowers white, perianth not spreading; dorsal sepal ovate, 4 mm long, 2.5 mm wide, obtuse, 3-nerved; lateral sepals obliquely triangular, acute, connate at base and forming short mentum; petals oblong or elliptic, 3 mm long, 1.5 mm wide, obtuse, 1-nerved; lip pandurate-oblong, 4.5 mm long, 3 mm wide, base saccate-concave, joined with foot of column and forming sac, slightly widened from middle, recurved at tip, disc with ligulate hirsute appendage from middle toward base, also with 2 small ridges at recurved point and small pointed callus at apex; column with foot ca. 3.2 mm long; anther erect, elongate cordate, rostellum triangular, bifid; pollinia narrowly clavate.

分布

• 台灣 : known only from Lanyu Is., forests of Tashenshan.
• 世界 : Philippines.

引證標本

TAITUNG: Lanyu Is., Lin 364.

參考文獻

• SU, Horng-Jye, Flora of Taiwan, second edition 5: 753. 2000.  (Fl. Taiwan 2nd edit.)
• Paul Ormerod, Taiwania 47(4): 239. 2002.